Maintenance

8 Maintenance

8.1 Cleaning

Danger!

Power Panel devices are only permitted to be cleaned while switched off in order to prevent unintended functions from being triggered when handling the touch screen or pressing keys.

Power Panel devices should be cleaned with a moist cloth. The cloth should be moistened with water and detergent, a screen cleaning agent or alcohol (ethanol). The cleaning agent should be applied to the cloth beforehand, not sprayed directly on the Power Panel! Never use aggressive solvents, chemicals, scouring agents, pressurized air or steam-jet air ejectors.

Notice!

Cleaning the label on the back of the unit is only permitted with a dry cloth. This ensures readability of the thermal print during the service life of the device.

Information:

The display with the touch screen should be cleaned at regular intervals.

8.2 Screen burn-in on LCD/TFT monitors

Screen burn-in (afterimages, display memory effect, image retention or image persistence) occurs on LCD/TFT monitors if static image content is displayed for a prolonged period of time. This static screen content causes the build-up of parasitic capacitances within the LCD components that prevent liquid crystal molecules from returning to their original state. This condition is unpredictable and can depend on the following factors:

•Type of image displayed

•Color composition of the image

•Length of time that the image is displayed

•Ambient temperature

Preventing screen burn-in

Even if there is no possibility to avoid screen burn-in 100%, measures can be taken to reduce it significantly.

•Avoid static images or screen content.

•Use screensavers (moving) when the display is not in use

•Frequent picture change

•Turn off the display when not in use.

Turning off the backlight does not help prevent screen burn-in.